Answer:
conductors
Step-by-step explanation:
Materials that can transfer sound, heat, and light are known as conductors. Metals, such as copper and aluminum, are good conductors of all three because they have free electrons that can easily move through the material, transferring energy in the form of sound waves, heat, and light. Other materials, like water, glass, and air, can also transfer sound, heat, and light to varying degrees, but they are not as good conductors as metals. In contrast, materials that do not conduct sound, heat, and light well are called insulators, such as rubber, wood, and plastic.